Datasheet ADP5138 (Analog Devices) - 8

ADP5138 Data Sheet PIN CONFIGURATION AND FUNCTION DESCRIPTIONS C N B1 N1 VI ND N4 B4 F E A SYN G E F 28 27 26 25 24 23 22 PVIN1 1 21 PVIN4 SW1 2 20 SW4 PGND1 3 19 PGND4 ADP5138 PGND2 4 TOP VIEW 18 PGND3 SW2 5 (Not to Scale) 17 SW3 PVIN2 6 16 PVIN3 FB2 7 15 FB3 8 9 1 10 1 12 13 14 R 5 N2 N B5 T5 N5 N3 E PO F E E PVI OU V NOTES
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1. EXPOSED PAD. SOLDER THE EXPOSED PAD TO AN EXTERNAL GROUND PLANE.
16669- Figure 3. Pin Configuration
Table 6. Pin Function Descriptions Pin No. Mnemonic Description
1 PVIN1 Power Input for Channel 1. Connect PVIN1 to the input power source, and connect a bypass capacitor between this pin and PGND1. 2 SW1 Switch Node for Channel 1. 3 PGND1 Power Ground for Channel 1. 4 PGND2 Power Ground for Channel 2. 5 SW2 Switch Node for Channel 2. 6 PVIN2 Power Input for Channel 2. Connect PVIN2 to the input power source, and connect a bypass capacitor between this pin and PGND2. 7 FB2 Feedback Voltage Sense Input for Channel 2. Connect this pin to a resistor divider from VOUT2 for the adjustable version. For the fixed output version, connect this pin to VOUT2 directly. 8 EN2 Precision Enable Pin for Channel 2. Use an external resistor divider to set the turn-on threshold. To enable Channel 2 automatically, connect the EN2 pin to PVIN2. 9 POR Power-On Reset Output (Open Drain). 10 PVIN5 Power Input for Channel 5. Connect PVIN5 to the input power source, and connect a bypass capacitor between this pin and ground. 11 FB5 Feedback Voltage Sense Input for Channel 5. Connect this pin to a resistor divider from VOUT5 for the adjustable version. For the fixed output version, connect this pin to VOUT5 directly. 12 VOUT5 Output of Channel 5. Connect a bypass capacitor between this pin and ground. 13 EN5 Precision Enable Pin for Channel 5. Use an external resistor divider to set the turn-on threshold. To enable Channel 5 automatically, connect the EN5 pin to PVIN5. 14 EN3 Precision Enable Pin for Channel 3. Use an external resistor divider to set the turn-on threshold. To enable Channel 3 automatically, connect the EN3 pin to PVIN3. 15 FB3 Feedback Voltage Sense Input for Channel 3. Connect this pin to a resistor divider from VOUT3 for the adjustable version. For the fixed output version, connect this pin to VOUT3 directly. 16 PVIN3 Power Input for Channel 3. Connect PVIN3 to the input power source, and connect a bypass capacitor between this pin and PGND3. 17 SW3 Switch Node for Channel 3. 18 PGND3 Power Ground for Channel 3. 19 PGND4 Power Ground for Channel 4. 20 SW4 Switch Node for Channel 4. 21 PVIN4 Power Input for Channel 4. Connect PVIN4 to the input power source, and connect a bypass capacitor between this pin and PGND4. 22 FB4 Feedback Voltage Sense Input for Channel 4. Connect this pin to a resistor divider from VOUT4 for the adjustable version. For the fixed output version, connect this pin to VOUT4 directly. 23 EN4 Precision Enable Pin for Channel 4. Use an external resistor divider to set the turn-on threshold. To enable Channel 4 automatically, connect the EN4 pin to PVIN4. Rev. A | Page 8 of 23 Document Outline Features Applications Typical Application Circuit General Description Revision History Functional Block Diagram Specifications Buck Regulator Specifications LDO Regulator Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Control Scheme Precision Enable and Shutdown Oscillator and Phase Shift Synchronization Input Overvoltage Lockout (OVLO) Input Undervoltage Monitor (UVM) Input Undervoltage Lockout (UVLO) Output Voltage Power-Good Power-On Reset (POR) Soft Start and Power-Up Sequence Current-Limit and Short-Circuit Protection Active Output Discharge Thermal Shutdown Applications Information Input Capacitor Selection Output Voltage Setting Inductor Selection Output Capacitor Selection Application Circuit Factory-Programmable Options Outline Dimensions Ordering Guide Automotive Products